Home / 8,316.66-12,471.34-3,118.90

Finding the Fourth Proportional to 8,316.66, 12,471.34 and 3,118.90

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Solution

The fourth proportional to 8,316.66, 12,471.34 and 3,118.90 is: 4,676.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.66 : 12,471.34 = 3,118.90 : x
  2. Step 2: Convert to fraction form
    8,316.66/12,471.34 = 3,118.90/x
  3. Step 3: Cross multiply
    8,316.66x = 12,471.34 × 3,118.90
  4. Step 4: Simplify right side
    8,316.66x = 38,896,862.33
  5. Step 5: Solve for x
    x = 38,896,862.33/8,316.66
  6. Step 6: Final answer
    x = 4,676.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.